Enhancement of photocurrent generation in quantum dot-sensitized solar cells by the collection of excitation energy

2014 Fiscal Year Final Research Report

• Project/Area Number: 25810133
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Inorganic industrial materials
• Research Institution: Nagoya University
• Principal Investigator: KAMEYAMA Tatsuya 名古屋大学, 工学(系)研究科(研究院), 助教 (40646759)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 量子ドット / 増感太陽電池 / 光エネルギー変換 / 電子エネルギー構造 / 固溶体 / 低毒性 / ナノ構造制御

Outline of Final Research Achievements

Size-quantized semiconductor nanocrystals, so-called quantum dots (QDs), have attracted much attention for the application of light energy conversion systems. For the purpose of solar cell application, it is expected that the control of their arrangement of QDs, that is stuck structure of QDs, will improve the energy conversion efficiency of the cells because a preferable energy gradient can be obtained to drive the photogenerated electrons in semiconductor QDs array toward the collecting electrode.
In this study, I tried to achieve that by the development of ZnSe-AgInSe2 solid solution QDs having widely-controllable-electronic-energy structure. Thus-prepared QDs were assembled onto electrode using dip-coating technique and investigated the electronic energy structures-related photocurrent generation.

Free Research Field

光電気化学